Influence of various surfactants on magnetic property of cobalt ferrite prepared by Co-precipitation technique

Cobalt Ferrite (CoFe2O4) particles were synthesised using a Co-precipitation method. Influence of three different surfactants i.e. (1) Cationic – CTAB (Cetyl Tri-Methyl Ammonium Bromide), (2) Anionic – SDBS (Sodium Dodecyl Benzene Sulphonate) and (3) Nonionic – Triton X-100, on magnetic property of Cobalt Ferrite were investigated. Magnetic property of Cobalt ferrite powder was studied at room temperature using Vibrating Sample Measurements (VSM) technique under an applied magnetic field of 15kOe. The results show maximum value of saturation magnetization - Ms (81.87 emu/g) for the sample synthesised without surfactant and Coercivity value found maximum (2086 kOe) for the sample synthesized in presence of surfactant SDBS.